How to make concrete?

Concrete is a hardened mixture of cement, water and aggregates. The amount and proportions of concrete components should produce a mixture of required consistence, intended concrete impermeability and strength. The tables presented in the standards give mortar specifications for 1 m3. Each component should be carefully weighed and/or measured as a change in mortar specifications might change concrete properties. The amount of sand added to the mixture is of great importance – it is accepted that it should make for at least 30 % of all aggregates by mass. The required consistence is obtained by using the right proportion of cement to water mass (the less cement, the leaner mixture) or carefully selected admixtures.

Concrete made with Cement Max 32.5

Concrete made with Cement Max 42.5